A pair of deer munch on foliage along a boardwalk at The Ridges Sanctuary in Baileys Harbor. Mike Neal of the Wisconsin Department of Natural Resources gives a talk on deer hunting as it relates to population control and the ecosystem on Sept. 20 at The Ridges. Submitted

Toni Sanford and her husband, Mike, were kayaking up the Eau Claire River when Mike spotted a deer laying on the bank of the river. As they came closer, the deer stood up and gave them a perfect shot. Submitted by Toni Sanford

Hordes of mosquitoes and other biting pests are driving deer out of woodlands at all hours of the day. This bachelor group of young bucks was seen near Lincoln in June 2014. Kevin Naze/For the Kewaunee County Star-News

This whitetail doe was in the midst of shedding its insulating winter coat in Whitefish Dunes State Park recently. Most does have had their fawns in recent weeks. They'll be more visible in the coming weeks as they frequent farm country fields. Kevin Naze/Door County Advocate

A spring break snowstorm on Monday, April 14, 2014 was a beautiful site for some and a calamity for others as Mother Nature brought yet another snow storm to the Wisconsin Rapids area. Casey Lake/For Wisconsinoutdoorfun.com

This piebald yearling ventured through Steve Meurett's yard in December 2013. The deer's 'knees' are white, with a lower leg slash mark (a sibling has the same lower leg markings) and white around the front and rear hoofs. Submitted by Steve Meurett

This piebald yearling ventured through Steve Meurett's yard in December 2013. The deer's 'knees' are white, with a lower leg slash mark (a sibling has the same lower leg markings) and white around the front and rear hoofs. Submitted by Steve Meurett

This piebald yearling ventured through Steve Meurett's yard in December 2013. The deer's 'knees' are white, with a lower leg slash mark (a sibling has the same lower leg markings) and white around the front and rear hoofs. Submitted by Steve Meurett

MADISON — Officials at Fort McCoy are warning deer hunters to watch out for unexploded ordnance when the gun season begins later this month.

Range officers say hunters often come across unexploded artillery and mortar rounds. They say anyone who finds any unexploded ordnance should recognize the object could be dangerous, leave the area without touching the ordnance and immediately notify the authorities.

Wisconsin's gun deer season is set to begin Saturday and run through Nov. 30. Hundreds of hunters are expected to hunt on Fort McCoy acreage.

The military training base lies between Sparta and Tomah in western Wisconsin.